In this paper is presented a method to extract the image ridge feature for image registration, and good results were obtained.
本文提供了一种提取图像脊特征，作为用于配准的特征量的方法，取得了良好效果。
Binary is an important step of pre-processing. It is feature of finger ridge rather than gray of image that are focused on.
二值化是指纹预处理的一个重要步骤，人们关心的是指纹纹线走向的特点，而不是图像的明暗。
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